1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647fd75037bb61f66c27538be24b52b29837ac83eb6b62b0467fc279bf79f17a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f13ce636-cde4-4a7f-b7fe-e6f4c83d185e.json and https://artists.proofprofile.net/proofs/artist/f13ce636-cde4-4a7f-b7fe-e6f4c83d185e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4089a1fd33d4f40406c8653a58ca442fd8597ab9dfaad32f831a6e326f394a. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542409778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e691cd975980a8cd42e5f15bb2db46220b64b9f1c6c37e6dc8017e57153ab29. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542409775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fadc49eedd3cd8e0065d24087a5e7fc2f73d8f1313d756595bea995bc4d2cc. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542409777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85910988fdf8ee161556e11674811ede8f980afff4b49a81ae15446d5f32654d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542409773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8833a5dbf1294499f4e3e5a66cd66bdfbad3530d0861e960646f5ce54b4e78d9. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542409776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb8d21370b125254b037f66da9004976a6fd3e390ae46a86b388fe3aa14d5fd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542418978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff263c82a42d3816cd52f89ec18799b0271a3d5401a243b259b13ca5fcfc5c57. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542512519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dd67c4521da248240181053b5736994aafbf208c68764c70599be924bed4d7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542512517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2b395fd8e2477a9b86a8582e0655d92e4cc1847ed9913723ec1751539199b5. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542518066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991c00918c76f579c944f1e2ea59828d7676d0bb600e51d0e9c3be39264f99dc. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:06:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542518065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e7f3a9e3b4fabb774ec3c7a704eb0f7ab256ee49ccd943fc71dd3d7a1709eb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542518067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ceae815747b7b38cbc0b05e9b8e163bd616e222681f978b2b65a9ae5013706. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542518068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f967aed4affd5942894f052fd556a2e3a651d6143930fa8c2ad98f58243b88. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:20:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542518070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005a95470033d5e4bc9cc40c9a601f85c4f1980109bcda3a9ea3351e2ae2e4d6. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542518069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2375c98aaf062e5c5579271655895d44ff36034205e009fb01d5ac6a5e62660a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542518071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fbf097e31d3057906d0549a6b29bb2565d7e6c1160c32c273b6094bfbc2d7c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542518064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ca79a94e9632c3f1f7653803c1525fb4b6bfd4acbaf04d181a7d77ebc211c7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542518072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea649d34c7729f59c4dc2226c8ac50e52ce6e1802bd13d89ab975371c8b2b3c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542518062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861cfd00059ba30dbd01c723acaef6baba2aadb2beb74d70488ddff507901803. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542518075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50065d8c3754e268548719ae964ac46ad0145478783a8b32a6d114d3034ca7a4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542520931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd90690ce2cf9ea3659bb35004c6592bba0180b9e970c3bf243f594db9f22200. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542520934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554ed995f3a7c02a020318d1a305ddafaefa22dee464bad6f176d2632c4c6870. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542520936.